Buggy code:
public class AssetDistributionDao { private final ActorAssetUserManager actorAssetUserManager ; private final DigitalAssetDistributionVault digitalAssetDistributionVault ; private UUID pluginId ; private Database database ; private PluginDatabaseSystem pluginDatabaseSystem ; public AssetDistributionDao ( PluginDatabaseSystem pluginDatabaseSystem , UUID pluginId , DigitalAssetDistributionVault digitalAssetDistributionVault , ActorAssetUserManager actorAssetUserManager ) throws CantExecuteDatabaseOperationException { } public void startDelivering ( String genesisTransaction , String assetPublicKey , String userPublicKey ) throws CantStartDeliveringException , TransactionAlreadyDeliveringException { } public void persistDigitalAsset ( String genesisTransaction , String localStoragePath , String digitalAssetHash , String actorReceiverPublicKey , String actorReceiverBitcoinAddress ) throws CantPersistDigitalAssetException { } public void updateActorAssetUser ( ActorAssetUser user , String genesisTransaction ) throws CantLoadTableToMemoryException , CantUpdateRecordException , RecordsNotFoundException { } public void updateDistributionStatusByGenesisTransaction ( DistributionStatus distributionStatus , String genesisTransaction ) throws CantExecuteQueryException , UnexpectedResultReturnedFromDatabaseException { } public void saveNewEvent ( String eventType , String eventSource ) throws CantSaveEventException { } public void updateDeliveringStatusForGenesisTransaction ( String genesisTransaction , DistributionStatus status ) throws RecordsNotFoundException , UnexpectedResultReturnedFromDatabaseException , CantCheckAssetDistributionProgressException { } public void updateDigitalAssetCryptoStatusByGenesisTransaction ( String genesisTransaction , CryptoStatus cryptoStatus ) throws UnexpectedResultReturnedFromDatabaseException , CantCheckAssetDistributionProgressException { } public void updateEventStatus ( String eventId ) throws CantExecuteQueryException , UnexpectedResultReturnedFromDatabaseException { } public void persistDistributionId ( String genesisTransaction , String distributionId ) throws CantPersistsTransactionUUIDException { } public void cancelDelivering ( String transactionId ) throws CantExecuteQueryException , UnexpectedResultReturnedFromDatabaseException { } public boolean isFirstTransaction ( String genesisTransaction ) throws CantCheckAssetDistributionProgressException { <START_BUG> return ( getValueListFromTableByColumn ( genesisTransaction , ASSET_DISTRIBUTION_DELIVERING_TABLE_NAME , ASSET_DISTRIBUTION_DELIVERING_GENESIS_TRANSACTION_COLUMN_NAME , ASSET_DISTRIBUTION_DELIVERING_TRANSACTION_ID_COLUMN_NAME ) . size ( ) ) > 1 ; <END_BUG> } public boolean isDeliveringGenesisTransaction ( String genesisTransaction ) throws CantCheckAssetDistributionProgressException { } public DeliverRecord getLastDelivering ( String genesisTx ) throws CantCheckAssetDistributionProgressException { } public List < DeliverRecord > getDeliveringRecordsFromGenesisTransaction ( String genesisTransaction ) throws CantCheckAssetDistributionProgressException { } public List < DeliverRecord > getDeliveringRecords ( ) throws CantCheckAssetDistributionProgressException { } public List < DeliverRecord > getDeliverRecordsForGenesisTransaction ( String genesisTransaction ) throws CantCheckAssetDistributionProgressException { } private String getStringFieldByDeliveringId ( String deliveringId , String column ) throws CantLoadTableToMemoryException , RecordsNotFoundException { } private Long getLongFieldByDeliveringId ( String deliveringId , String column ) throws CantLoadTableToMemoryException , RecordsNotFoundException { } private List < String > getDeliveringIdByStatus ( DistributionStatus status , String genesisTransaction ) throws CantCheckAssetDistributionProgressException { } private void updateDeliveringStatus ( DistributionStatus status , String transactionId ) throws CantExecuteQueryException , UnexpectedResultReturnedFromDatabaseException { } private List < String > getDeliveringTransactionsFromGenesisTransaction ( String genesisTransaction ) throws CantCheckAssetDistributionProgressException { } private List < String > getDeliveringTransactions ( ) throws CantCheckAssetDistributionProgressException { } private DatabaseTable getDatabaseTable ( String tableName ) { } private Database openDatabase ( ) throws CantExecuteDatabaseOperationException { } private void updateStringValueByStringFieldDeliveringTable ( String value , String columnName , String filterValue , String filterColumn ) throws CantExecuteQueryException , UnexpectedResultReturnedFromDatabaseException { } private void updateStringValueByStringFieldDistributionTable ( String value , String columnName , String filterValue , String filterColumn ) throws CantExecuteQueryException , UnexpectedResultReturnedFromDatabaseException { } private boolean isPendingEventsBySource ( EventSource eventSource ) throws CantExecuteQueryException { } private List < String > getPendingEventsBySource ( EventSource eventSource ) throws UnexpectedResultReturnedFromDatabaseException , CantCheckAssetDistributionProgressException { } private List < String > getGenesisTransactionByDistributionStatus ( DistributionStatus distributionStatus ) throws CantCheckAssetDistributionProgressException { } private List < String > getValueListFromTableByColumn ( String filterValue , String table , String filterColumn , String returningColumn ) throws CantCheckAssetDistributionProgressException { } private List < String > getValueListFromTableByColumn ( Map < String , String > filters , String table , String returningColumn ) throws CantCheckAssetDistributionProgressException { } private String getStringValueFromSelectedTableTableByFieldCode ( String tableName , String value , String fieldCode , String indexColumn ) throws UnexpectedResultReturnedFromDatabaseException , CantCheckAssetDistributionProgressException { } private DeliverRecord constructRecordFromTransactionId ( String transactionId ) throws CantCheckAssetDistributionProgressException { } public boolean isPendingNetworkLayerEvents ( ) throws CantExecuteQueryException { } public boolean isPendingIncomingCryptoEvents ( ) throws CantExecuteQueryException { } public List < String > getPendingNetworkLayerEvents ( ) throws UnexpectedResultReturnedFromDatabaseException , CantCheckAssetDistributionProgressException { } public List < String > getPendingCryptoRouterEvents ( ) throws UnexpectedResultReturnedFromDatabaseException , CantCheckAssetDistributionProgressException { } public String getEventTypeById ( String eventId ) throws UnexpectedResultReturnedFromDatabaseException , CantCheckAssetDistributionProgressException { } public List < String > getGenesisTransactionByAssetAcceptedStatus ( ) throws CantCheckAssetDistributionProgressException { } public List < String > getGenesisTransactionByAssetRejectedByContractStatus ( ) throws CantCheckAssetDistributionProgressException { } public List < String > getGenesisTransactionByAssetRejectedByHashStatus ( ) throws CantCheckAssetDistributionProgressException { } public List < String > getGenesisTransactionListByCryptoStatus ( CryptoStatus cryptoStatus ) throws CantCheckAssetDistributionProgressException { } public String getActorUserPublicKeyByGenesisTransaction ( String genesisTransaction ) throws UnexpectedResultReturnedFromDatabaseException , CantCheckAssetDistributionProgressException { } public String getPublicKeyByGenesisTransaction ( String genesisTransaction ) throws UnexpectedResultReturnedFromDatabaseException , CantCheckAssetDistributionProgressException { } public String getTransactionIdByGenesisTransaction ( String genesisTransaction ) throws UnexpectedResultReturnedFromDatabaseException , CantCheckAssetDistributionProgressException { } public String getActorUserCryptoAddressByGenesisTransaction ( String genesisTransaction ) throws UnexpectedResultReturnedFromDatabaseException , CantCheckAssetDistributionProgressException { } public boolean isPendingTransactions ( CryptoStatus cryptoStatus ) throws CantExecuteQueryException { } public boolean isGenesisTransactionRegistered ( String genesisTransaction ) throws CantExecuteQueryException { } }

Fix:
return ( getValueListFromTableByColumn ( genesisTransaction , ASSET_DISTRIBUTION_DELIVERING_TABLE_NAME , ASSET_DISTRIBUTION_DELIVERING_GENESIS_TRANSACTION_COLUMN_NAME , ASSET_DISTRIBUTION_DELIVERING_TRANSACTION_ID_COLUMN_NAME ) . size ( ) ) == 1 ;